Hello and welcome to the site. Thank you for your question.It is your intention to sell half share of the property to your son and partner. As you are retaining 50% share, your profit on sale of 50% share will beCapital gains tax calculation -Sale proceeds 50% share = £70,000Cost price (80,000+10,000)/2 = £45,000Gain = (70,000-45,000) = £25,000Capital gains allowance (11,000x2) = £22,000Gain chargeable to capital gains tax (25,000-22,000) £3,000CGT at 18% £540Based of above calculations, CGT payable on sale of half share of your 2nd home would be £540.My advice would be to complete the transaction in one go in light of this small amount payable. You could make a sale of 25% share in one year and the remaining 25% in the second year but you should consider the lost opportunity of earning interest on another £35,000 from day one.
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